Lock-brace for lens-mounts.



No. 783,000. PATENTED FEB. 21, 1905. F. F. WADE.

LOCK BRAGE FOR LENS MOUNTS.

APPLICATION FILED JULY 25, 1904.

UNITED STATES Patented February 21, 1905.

PATENT OFFICE.

FRANK FAULKNER WADE, OF TORONTO, CANADA, ASSIGNOR TO THE COHEN BROTHERS LIMITED, OF TORONTO, CANADA.

LOCK-BRACE FOR LENS-MOUNTS.

SPECIFICATION forming part of Letters Patent No. 783,000, dated February 21, 1905.

i Application filed July 26,1904. Serial No. 218,030.

To all whom it may concern.-

Be it known thatI, FRANK FAULKNER WVADE, superintendent, asubject of the King of Great Britain, residing in the city of Toronto, in the county of York and Province of Ontario, Oanada, have invented certain new and useful Improvements in Lock-Braces for Lens-Mounts, of which the following is a specification.

My invention relates to improvements in lock-braces for lens-mounts for. rimless eyeglasses and spectacles; and the object of my invention is to firmly and permanently lock the lens-mount to the lens without cracking same, notwithstanding any variationin the distance of the lens-holes from the edge of the lenses, by supporting the said stud so that according to the tendency of movement of same the firmer will it bind in its original position; and it consists, essentially, in removably inserting between the edge of the lens and any suitable make of stud a piece of metal of particular construction harder than the metal out of which said stud is made, as hereinafter more particularly explained. My preferred form of lock-brace consists of a bow-shaped piece of tempered metal, which is placed between the edge of the lens and any suitable stud and is provided with a lug. The lockbrace exerts a force outward against the stud and, together with its lug, prevents loosening of same and consequent wabbling of the lens.

Although my lock-brace is shown as extending a considerable distance beyond the sides of the stud, this is not absolutely essential, as it is only essential to make said lock-brace of suflicient length so that the part of the stud resting thereupon will bind thereagainst whenever any force is exerted upon the stud. Of course better results are got by making the said support equal to or greater than the width of the stud restingthereagainst.

Figure 1 is a side elevation of a pair of lenses, showing the mounts provided with a lock-brace. Figs. 2 and 3 are longitudinal central sections through the lens-mount and my lock-brace for same and showing part of the lens. Fig. Jcis an enlarged perspective view of my preferred form of lock-brace. Fig. 5 is-an enlarged side elevation of my preferred form of stud. Fig. 6 is a side elevation of my preferred form of lock-brace, showing same resting against the edge of part of the ens.

In the drawings like characters of reference indicate corresponding parts in each figure.

The preferred form of stud consists of a centrally-pierced portion A and two pierced ears B, which receive the lens between them. Between the ears O of each stud are placed the pierced ends of the bridge D and the pierced ends of the offset portions E of the nose-guard F. By means of a threaded screw G passing down therethough and into the threaded hole a the bridge I) and offset portions E are secured to the studs.

By making my lock-brace distinct from the stud it will be understood that the action of forces on the stud in the direction shown by arrow in Fig. 8 cannot possibly have any effeet or tendency to raise the lock-brace outward and bend it out of contact with the edge of the lens. The lock-brace H is placed between the stud and the edge of the lens I, and being bow-shaped it will be understood that it always exerts a force outward against said stud. Then the holes bof the ears B are being brought-in alinement with the hole 0 of thelens, the lock-brace H is moved from the position shown in Fig. 6 flat against the side of the lens, as shown in Fig. 3. Immediately the holes 5 are placed the screw or rivet (Z is passed therethrough and through the hole 0, and the studs thus secured to the lenses. When the lock-brace is being secured in position, the lug it of same, (secured thereto or stamped up therefrom) which for a suitable distance up from its base is greater than the diameter of the inner end a of the hole (6, extends partly into the hole a, and as the holes Z) are being brought into alinement with the hole 0 the inner end 6 of the hole a is receiving thelug it. (See Fig. 2.) As thelock-brace H and its lug it are made of metal harder than the metal out of which the studs are made, it will be understood that said lug will readily pass into the hole a by the exertion of the necessary pressure. By means of these lugs I prevent any possibility of the lockbrace H from being pushed lengthwise from position.

As is well known, the holes are not always made in the lenses at a uniform distance from their edges. In case the lock-brace H should be brought flat in contact with the edge of the lens I before the holes 6 register with the hole 0 it will be understood that the lug it and hole a provide means whereby the studs may be moved, so that said holes will be brought into alinement.

As will be seen from Figs. 4 and 6, I preferabl y notch the side of the lock-brace H near its center, as shown at 2', for the convenience of assembling the lens-mount.

I hereby claim that Imay make changes in the construction of my lock-brace and stud therefor without departing from the spirit of my invention.

What I claim as my invention is 1. A lock-brace for lens-mounts, comprising a bow-shaped piece of tempered metal, that will be, when held in locking position, under tension and always exert a force to assume its normal shape, and a lug on the upper side of said lock-brace.

2. A lock-brace for lens-mounts, comprising a bow-shaped piece of tempered metahthat will be, when held in looking position, under tension and always exert a force to assume its normal shape, and a lug on the upper side of said lock-brace, the said lock-brace being cut away for a short distance on both sides thus forming notches between which is the said lug.

3. A lock-brace for lens-mounts, comprising a bow-shaped piece of tempered metal,that will be, when held in looking position, under tension and always exert a force to assume its normal shape, and a lug on the upper side of said lock-brace and midway its ends, the said lock-brace being cut away midway its ends for a short distance on both sides thus forming notches between which is the said lug.

4. In lens-mounts, the combination with a stud made of the ordinary soft metal provided with a hole adjacent the edge of the lens, and said lens to which same is attached, of a lock-brace comprising a bow-shaped piece of tempered metal designed to be placed, and

held under tension, between said stud and the edge of said lens so as to exert a force outward against said stud, and a lug on the upper side of said lock-brace; the hole in said stud being of less diameter than the major portion of said lug.

5. In lens-mounts, the combination with a stud, made of the ordinary soft metal, provided with a hole adjacent the edge of the lens; two ears forming part of said stud and embracing said lens, and said lens to which same is attached, of a lock-brace comprising a bow-shaped piece of tempered metal designed to be placed, and held under tension, between said stud and the edge of said lens, so as to exert a force outward against said stud; a lug on the upper side of said lockbrace; the hole in said stud being of less diameter than the major portion of said lug; the said lock-brace being cut away for a suitable distance on both sides, thus forming notches between which is said lug, the notches snugly fitting the upper end of said ears.

6. In lensmounts, the combination with a stud, made of the ordinary soft metal, provided with a hole adjacent the edge of the lens; two end-pierced ears forming part of said stud and embracing said lens; the lens provided with a hole, and a rivet passing through said ears and securing said stud to said lens, of a lock-brace comprising a bowshaped piece of tempered metal designed to be placed, and held under tension, between said stud and the edge of said lens, so as to exert a force outward against said stud; a lug on the upper side of said lock-brace; the hole in said stud being of less diameter than the major portion of said lug; the said lock-brace being cut away for a suitable distance on both sides, thus forming notches between which is said lug, the notches snugly fitting the upper end of said ears.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK FAULKNER I/VADE.

WVitnesses:

EGERTON R. CASE, 'WILMoT R. BLACKHALL. 

